39745390 has 8 divisors (see below), whose sum is σ = 71541720. Its totient is φ = 15898152.

The previous prime is 39745367. The next prime is 39745411. The reversal of 39745390 is 9354793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987260 + ... + 1987279.

It is an arithmetic number, because the mean of its divisors is an integer number (8942715).

Almost surely, 2^39745390 is an apocalyptic number.

39745390 is a deficient number, since it is larger than the sum of its proper divisors (31796330).

39745390 is a wasteful number, since it uses less digits than its factorization.

39745390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974546.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 39745390 is about 6304.3944990776. The cubic root of 39745390 is about 341.2680159729.

The spelling of 39745390 in words is "thirty-nine million, seven hundred forty-five thousand, three hundred ninety".